CN201320771Y

CN201320771Y - Rotary cutting knife roll and rotary cutting device comprising same

Info

Publication number: CN201320771Y
Application number: CNU2008202290013U
Authority: CN
Inventors: 郭尚接
Original assignee: SANMING PNV MACHINERY CO Ltd
Current assignee: SANMING PNV MACHINERY CO Ltd
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2009-10-07
Anticipated expiration: 2018-11-21

Abstract

The utility model relates to a rotary cutting knife roll and a rotary cutting device provided with such rotary cutting knife roll. The rotary cutting device further comprises an anvil-roll which matches with the rotary cutting knife roll; a transitional edge is arranged on the surface of the rotary cutting knife roll; and the projection of the transitional edge on the plane of the central axis of the rotary cutting knife roll takes the shape of a curve. The rotary cutting knife roll and the rotary cutting device provided with such rotary cutting knife roll are widely applicable in the production of various hygienic articles, particularly the production of sanitary towels, and have the advantage of prolonged service life.

Description

A kind of rotary-cut rotor and rotary cutting apparatus with this rotary-cut rotor

Technical field

The utility model relates to a kind of rotary-cut mould applications, especially relates to a kind of rotary cutting apparatus that is used for the rotary-cut rotor of amenities production and has this rotary-cut rotor.

Background technology

Sanitary napkin is women's a daily essential product.Sanitary napkin adopts rotary-cut rotor and anvil roller to be processed into type usually, generally is distributed with the moulding cutter hub of several sanitary napkins on the sanitary napkin rotor roll surface.Zone on the rotor roll surface between each moulding cutter hub is commonly referred to the sheet square.As shown in Figures 1 and 2, a kind of existing rotary cutting apparatus comprises rotary-cut rotor 10 and the anvil roller that matches (figure does not show).Rotary-cut rotor 10 is provided with two moulding cutter hubs 12, and is formed with a transitional edges 16 respectively in the both sides of sheet square 14 central authorities.Transitional edges 16 is vertical with the central axis of rotary-cut rotor 10, and the point of a knife 162 of transitional edges 16 is contour with the point of a knife 122 of moulding cutter hub 12, is used for the rotary-cut process and makes rotary-cut rotor 10 in the 14 position smooth transitions of sheet square.

Yet, in the course of the work, transitional edges 16 contacts on same circumference all the time with anvil roller, anvil roller is downcut by transitional edges 16 easily and forms indenture, in the course of time form pit, when transitional edges 16 contacts with the anvil roller pit, just can't play making the effect of rotary-cut rotor 10, thereby reduce the service life of rotary-cut rotor 10 and anvil roller in the 14 position smooth transitions of sheet square.

The utility model content

The technical problem that the utility model mainly solves is to provide a kind of rotary cutting apparatus that improves the rotary-cut rotor in service life and have this rotary-cut rotor.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of rotary-cut rotor, and this rotary-cut rotor is provided with transitional edges on roll surface, and wherein, this transitional edges is in the shaped form that is projected as on the plane, central axis place of rotary-cut rotor.

For solving the problems of the technologies described above, the utility model also adopts following technical scheme: a kind of rotary cutting apparatus, and it comprises rotary-cut rotor and the anvil roller that matches, this rotary-cut rotor is provided with transitional edges on roll surface, wherein, this transitional edges is in the shaped form that is projected as on the plane, central axis place of rotary-cut rotor.

Compared with prior art, rotary-cut rotor of the present utility model and rotary cutting apparatus with this rotary-cut rotor transitional edges after by above-mentioned improvement, contact area area at synchronization transitional edges and anvil roller is bigger, anvil roller is smaller with the pressure that is subjected under the equal pressure, and transitional edges and the contact range of anvil roller in rotation process after improving are also bigger, make anvil roller be difficult for forming indenture, therefore, have raising service life, and make rotary-cut rotor and rotary cutting apparatus beneficial effect more stably in whole rotary-cut process.

Description of drawings

Fig. 1 is a kind of structural representation of existing rotary-cut rotor;

Fig. 2 is the cutaway view of the rotary-cut rotor of Fig. 1.

Fig. 3 is the structural representation of the embodiment of the utility model rotary cutting apparatus;

Fig. 4 is the structural representation of the embodiment of the utility model rotary-cut rotor.

The primary clustering symbol description

20-rotary-cut rotor; 202,302-central axis; The 22-cutter hub; 222,252-point of a knife; The 25-transitional edges; The 30-anvil roller

The specific embodiment

Rotary-cut rotor of the present utility model and the rotary cutting apparatus with this rotary-cut rotor can be used for producing various amenities, as sanitary napkin etc.As shown in Figures 3 and 4, rotary-cut rotor of the present utility model proposes an embodiment with the rotary cutting apparatus with this rotary-cut rotor.This rotary cutting apparatus comprises the rotary-cut rotor 20 and the anvil roller 30 that matches, and rotary-cut rotor 20 can rotate toward the direction of arrow shown in Figure 3 around its central axis 202,302 respectively with anvil roller 30, and central axis 202 is parallel to each other with central axis 302.Rotary-cut rotor 20 is distributed with two curved cutter hubs 22 along its roller side face, is used for cooperating rotary-cut with the machine-shaping sanitary napkin with anvil roller 30.The both sides of the roll surface central authorities that two cutter hubs are 22 are respectively equipped with a transitional edges 25, and transitional edges 25 is in the circular arc that is projected as on the plane, central axis 202 place of rotary-cut rotor 20, and the point of a knife 252 of transitional edges 25 is contour with the point of a knife 222 of cutter hub 22.

The improvements of the rotary cutting apparatus of present embodiment and rotary-cut rotor 20 are in the be projected as circular arc of transitional edges 25 on the plane, central axis 202 place of rotary-cut rotor 20, the linear of relative prior art, bigger in synchronization transitional edges 25 with the contact area area of anvil roller 30, thus make anvil roller 30 smaller with the pressure that is subjected under the equal pressure; And the transitional edges after improving 25 is bigger with the contact range of anvil roller 30 in rotation process, anvil roller 30 can be only not stressed in its same circumference position contact, but can in the big zone of roll surface, bear the pressure of transitional edges 25, therefore, anvil roller 30 is difficult for forming indenture, thereby improved rotary-

cut rotor

25 and 30 service lifes of anvil roller, made rotary-cut rotor 25 more steady in whole rotary-cut process.For example, after the shape of the transitional edges 25 of prior art made into radius and be 80 millimeters circular arc, transitional edges 25 is bigger by 50% than original with anvil roller 30 contacts area, make anvil roller 30 littler by 50% than linear transitional edges with the pressure that is subjected under the equal pressure, rotary-cut rotor 20 and anvil roller improve 20% to 30% 30 service lifes.Certainly, the shape of the axis projection of transitional edges 25 relative rotary-cut rotors 20 also can be the circular arc of other radius.

In the foregoing description, transitional edges 25 also can be other shaped form in the projection on the plane, central axis 202 place of rotary-cut rotor 20, as waveform, also can be oblique line shape or broken line shape.

Be appreciated that the one or more cutter hub 22 that also can distribute on the roller side face on the rotary-cut rotor 20, wherein transitional edges 25 is distributed in the both sides of the roll surface of 22 of adjacent cutter hubs.

The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1, a kind of rotary-cut rotor, this rotary-cut rotor is provided with transitional edges on roll surface, it is characterized in that: this transitional edges is in the shaped form that is projected as on the plane, central axis place of rotary-cut rotor.

2, rotary-cut rotor according to claim 1 is characterized in that: described transitional edges is in the circular arc that is projected as on plane, described central axis place.

3, a kind of rotary cutting apparatus, it comprises rotary-cut rotor and the anvil roller that matches, this rotary-cut rotor is provided with transitional edges on roll surface, it is characterized in that: this transitional edges is in the shaped form that is projected as on the plane, central axis place of rotary-cut rotor.

4, rotary cutting apparatus according to claim 3 is characterized in that: described transitional edges is in the circular arc that is projected as on plane, described central axis place.